[Bug middle-end/19486] New: flags_complex_divide_method=1 doesn't work

["Thomas dot Koenig at online dot de" <gcc-bugzilla at gcc dot gnu dot org>]

With this diff

$ diff --recursive -u gcc-4.0-20050116/ gcc-play/
diff --recursive -u gcc-4.0-20050116/gcc/toplev.c gcc-play/gcc/toplev.c
--- gcc-4.0-20050116/gcc/toplev.c       2005-01-16 16:28:15.000000000 +0100
+++ gcc-play/gcc/toplev.c       2005-01-17 17:10:13.000000000 +0100
@@ -269,7 +269,7 @@
    1 means wide ranges of inputs must work for complex divide.
    2 means C99-like requirements for complex divide (not yet implemented).  */

-int flag_complex_divide_method = 0;
+int flag_complex_divide_method = 1;

 /* Nonzero means that we don't want inlining by virtue of -fno-inline,
    not just because the tree inliner turned us off.  */

to the 20051116 snapshot,  compiling a BLAS routine from netlib
(to be attached) leads to an ICE:
gfortran  -O0 -g -c crotg.f
crotg.f: In function 'crotg':
crotg.f:19: internal compiler error: in purge_dead_edges, at cfgrtl.c:2460
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.
make[1]: *** [crotg.o] Error 1
make[1]: Leaving directory `/home/zfkts/zfkts/LAPACK/BLAS/SRC'
make: *** [blaslib] Error 2
$ gfortran -v ; gfortran -dumpmachine
Using built-in specs.
Configured with: ../gcc-4.0-20050116/configure --prefix=/home/zfkts
--enable-languages=c,f95
Thread model: posix
gcc version 4.0.0 20050116 (experimental)
ia64-unknown-linux-gnu

-- 
           Summary: flags_complex_divide_method=1 doesn't work
           Product: gcc
           Version: 4.0.0
            Status: UNCONFIRMED
          Severity: enhancement
          Priority: P2
         Component: middle-end
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: Thomas dot Koenig at online dot de
                CC: gcc-bugs at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19486